--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/inc/Mp3Codec.h	Tue Feb 02 01:08:46 2010 +0200
@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+ * All rights reserved.
+ * This component and the accompanying materials are made available
+ * under the terms of "Eclipse Public License v1.0"
+ * which accompanies this distribution, and is available
+ * at the URL "http://www.eclipse.org/legal/epl-v10.html".
+ *
+ * Initial Contributors:
+ * Nokia Corporation - initial contribution.
+ *
+ * Contributors:
+ *
+ * Description: Telephony Multimedia Service
+ *
+ */
+
+
+#ifndef __MP3CODEC_H__
+#define __MP3CODEC_H__
+
+// INCLUDES
+#include <E32Base.h>
+
+// CONSTANTS
+
+// DATA TYPES
+
+// FORWARD DECLARATION
+class CMp3ToPcmDecoderImpl;
+
+// CLASS DEFINITIONS
+/*
+-----------------------------------------------------------------------------
+
+    TMp3DecParams
+
+    MP3 decoding parameters.
+
+    @since 2.1
+
+-----------------------------------------------------------------------------
+*/
+class TMp3DecParams
+    {
+public:
+    inline TMp3DecParams();
+public:
+    TInt iStereoToMono;    // stereo to mono switch (TRUE or default FALSE)
+    TInt iLeftRight;       // decode left or right channel (1 left, 2 right, 0 default all)
+    TInt iDecimFactor;     // decimation factor (2, 4 or default 1)
+    TInt iConcealment;     // error concealment level (0 none, default 1)
+    TInt iSampleLength;    // resolution of PCM samples (default 16 bits)
+    TInt iSamplingFrequency; //Output sampling frequency
+    };
+
+TMp3DecParams::TMp3DecParams() :
+iStereoToMono(0), iLeftRight(0), iDecimFactor(1), iConcealment(1), iSampleLength(16), iSamplingFrequency(0) {}
+
+
+
+/*
+-----------------------------------------------------------------------------
+
+    TMp3FrameInfo
+
+    MP3 frame info struct.
+
+    @since 2.1
+
+-----------------------------------------------------------------------------
+*/
+class TMp3FrameInfo
+    {
+public:
+    inline TMp3FrameInfo();
+public:
+    IMPORT_C static TInt MinFrameSize();
+    IMPORT_C static TInt MaxFrameSize();
+    IMPORT_C static TInt MaxFrameSamples();
+    IMPORT_C static TInt MaxChannels();
+    IMPORT_C static TInt MaxAncillaryBits();
+    IMPORT_C static TInt FrameHeaderSize();
+    IMPORT_C static TInt FrameSize(const TMp3FrameInfo& aInfo);
+public:
+    TInt iId;              // id of algorithm (1 MPEG-1, 0 MPEG-2)
+    TInt iLayer;           // layer number (1, 2, 3 or 4)
+    TInt iErrorProtection; // err prot flag (TRUE or FALSE, TRUE if err protected)
+    TInt iBitrate;         // bitrate (kbit/s)
+    TInt iSamplingRate;    // sampling frequency (Hz)
+    TInt iPadding;         // padding flag (TRUE or FALSE, TRUE if p slot exists)
+    TInt iPrivateBit;      // bit for private use
+    TInt iMode;            // audio mode (0 stereo, 1 jstereo, 2 dual, 3 mono)
+    TInt iChannels;        // number of audio channels (1 for mono, otherwise 2)
+    TInt iCopyright;       // copyright flag (TRUE or FALSE, TRUE if copyrighted)
+    TInt iOrigCopy;        // original flag (TRUE or FALSE, TRUE if original)
+    TInt iFrameSize;       // size of encoded frame (bytes)
+    TInt iFrameSamples;    // length of decoded frame (samples per channel)
+public:
+    TInt iSamplingRateOut; // sampling frequency after conversion(s) (Hz)
+    TInt iChannelsOut;     // number of audio channels after conversion(s) (1 or 2)
+    TInt iFrameSamplesOut; // length of decoded frame after conversion(s) (samples per channel)
+    };
+
+TMp3FrameInfo::TMp3FrameInfo() {}
+
+
+
+/*
+-----------------------------------------------------------------------------
+
+    CMp3ToPcmDecoder
+
+    Low level MP3 decoding API.
+
+    @since 2.1
+
+-----------------------------------------------------------------------------
+*/
+class CMp3ToPcmDecoder : public CBase
+    {
+protected:
+    IMPORT_C CMp3ToPcmDecoder();
+    IMPORT_C void ConstructL();
+
+public:
+    IMPORT_C static CMp3ToPcmDecoder* NewL(const TMp3DecParams& aConf);
+    IMPORT_C virtual ~CMp3ToPcmDecoder();
+    IMPORT_C void Reset();
+    IMPORT_C void Reset(const TMp3DecParams& aConf);
+    IMPORT_C static TInt FrameInfo(const TUint8* aBuf, TInt aBufLen, TMp3FrameInfo& aInfo);
+    IMPORT_C static TInt FrameInfo(const TUint8* aBuf, TInt aBufLen, TMp3FrameInfo& aInfo, const TMp3DecParams& aConf);
+    IMPORT_C static TInt SeekSync(const TUint8* aBuf, TInt aBufLen);
+    IMPORT_C TInt Decode(TUint8* aSrc, TInt& aSrcUsed, TUint8* aDst, TInt& aDstLen, TInt aMuteFlag);
+    IMPORT_C TInt Decode(TUint8* aSrc, TInt& aSrcUsed, TUint8* aDst1, TUint8* aDst2, TUint8* aDst3, TInt& aDstLen1,  TInt& aDstLen2,  TInt& aDstLen3, TInt aMuteFlag);
+private:
+    CMp3ToPcmDecoderImpl* iState;
+    };
+
+#endif //__MP3CODEC_H__
+//-----------------------------------------------------------------------------
+//  End of File
+//-----------------------------------------------------------------------------